EP1020736A2
Expired / Lapsed
EP
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Radar apparatus
Assignee: Honda Motor Co Ltd
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Filing: 2000-01-13
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Granted: —
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Expires: 2020-01-13
Abstract
Abstract A radar apparatus is provided that can correctly extract the necessary point for a determination related to the safe travel of one's automotive vehicle among objects such as automotive vehicles moving at an angle in front and constructed objects. The radar apparatus of the present invention provides antennas that transmit beams in a plurality of directions and receive the reflected waves from objects as received signals. The objects that generated these reflected waves are detected. In addition, this radar apparatus provides a reflected location detection device that detects the reflected locations that are the generation source of the reflected waves for this plurality of directions, a grouping device that groups each of these detected reflected locations into a group of single or plural reflected locations assuming they belong to the same object, and a device that extracts reflected locations having the shortest distance from the moving body from among these grouped reflected locations to serve as determination points related to the safe travel of this moving body.
Inventors
- 👤 Kazuhisa Satou
- 👤 Ken-I-Chi Tohya
- 👤 Takashi Sugawara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 11:02
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/505; G01S13/06; G01S13/42; G01S13/46; G01S13/48; G01S13/88; G01S13/93; G01S13/931; G01S2013/9327; G01S2013/93271
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
136 words
A radar apparatus providing antennas that transmits beams in a plurality of
directions and receives as reception signals the reflected waves from an object, and is
mounted on a moving object that detects objects that generate these reflected waves,
the radar apparatus comprising: a reflected location detection device that detects the generation source of
reflected waves (referred to hereinafter as "reflected locations") for each of a plurality of
directions; a device for grouping each of said detected reflected locations into a group of a
single or plural reflected locations assumed to be included in the same object; and a device that detects the reflected location having the shortest distance from this
moving object from among said grouped reflected locations to serve as the determination
point related to the safety of the travel of this moving body.
Claim 2
Dependent Claim
114 words
A radar apparatus providing an antenna that transmits beams in a plurality of
directions and receives as reception signals the reflected waves from an object, and is
mounted on a moving object that detects objects that generate these reflected waves,
the radar apparatus comprising: a reflected location detection device that detects the reflected locations for each
of a plurality of directions; a device for grouping each of said detected reflected location into a group of a
single or plural reflected locations assumed to be included in the same object; and a line segment extraction device that extracts line segments that form the profile
of a body from the arrangement of said grouped reflected locations.
Claim 3
Dependent Claim
52 words
A radar apparatus according to Claim 2 wherein the radar apparatus comprises a
device for extracting the point having the shortest distance from said moving object that
is on the profile formed by said extracted line segments to serve as the determination
points related to the safe travel of this moving body.
Claim 4
Dependent Claim
71 words
A radar apparatus according to Claim 2, wherein the radar apparatus comprises a
device that draws a line perpendicular from each point that is on said extracted line
segments to the line of the expected travel of the center of said moving body, and that
detects the point on this perpendicular line whose length is shortest to serve as the
determination point related to the safe travel of said moving object.
Claim 5
Dependent Claim
53 words
A radar apparatus according to Claim 2, wherein said line extracting device
calculates each reflected location while weighting the length of the perpendicular line
drawn from each of said reflected locations to the line segment of said extracted object,
and extracting said line segment so that the summation of these additions is minimized.
Claim 6
Dependent Claim
35 words
A radar apparatus according to Claims 2, wherein the radar apparatus comprises a
device that recognizes the points to which said two extracted line segments are nearly
perpendicular as the end points of the object.
Claim 7
Dependent Claim
39 words
A radar apparatus according to Claim 1, wherein said moving body is a car and the transmission of a beam in said plurality of directions is carried out by time-sharing
from a plurality of antennas ranged facing different directions.
Claim 8
Dependent Claim
117 words
A radar apparatus providing an antenna that transmits beams in a plurality of
directions and receives as reception signals the reflected waves from an object, and is
mounted on a moving object that detects objects that generate these reflected waves,
the radar apparatus comprising: a reflected location detection device that detects reflected locations in each of
said plurality of directions; and an unnecessary data elimination device that treats and eliminates as unnecessary
data in these directions the reflected locations detected as reflected locations having an
equal distance in single or plural directions among said extracted reflection points and
having a reception level that is lower than the pre-determined threshold value in the
directions of the reflected locations.
Claim 9
Dependent Claim
111 words
A radar apparatus providing an antenna that transmits beams in a plurality of
directions and receives as reception signals the reflected waves from an object, and is
mounted on a moving object that detects objects that generate these reflected waves,
the radar apparatus comprising: a reflected location detection device that detects reflected locations in each of
said plurality of directions; and an unnecessary data elimination device that treats and eliminates as unnecessary
data in these directions the reflected locations having a reception level that is lower than
the pre-determined value of reflected locations detected as reflected locations having an
equal distance in single or plural directions among said extracted reflection points.
Claim 10
Dependent Claim
49 words
A radar apparatus according to claim 9, wherein the determination of said
unnecessary data being carried out having an additional condition for determining
whether, among each of said detected reflected locations, reflected locations are included
having a high reception level and different distance in comparison to candidate
unnecessary data.
Claim 11
Dependent Claim
36 words
A radar apparatus according to Claims 9, wherein the reflection body making said
unnecessary data appear being determined to have a profile crossing or a vector that will
cross the direction of progression of one's vehicle.
References Cited (Backward Citations)
No citation records indexed.
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